The LP2985AIM5-4.5, from Texas Instruments, is a high-performance, low-noise, low-dropout voltage regulator that is designed to deliver a continuous output of 4.5 volts. This regulator is part of the LP2985 series, which is known for its exceptional stability and low output noise levels, making it an excellent choice for sensitive RF and analog circuitry.

Key Features

• Precision Output: This device provides a fixed output voltage of 4.5V with an impressive accuracy of ±0.5% at 25°C and ±1% over the full operating temperature range.
• High Current Capability: The LP2985AIM5-4.5 is capable of delivering up to 150mA of continuous current, which is suitable for a wide range of applications.
• Low Dropout Voltage: With a very low dropout voltage, typically 280mV at full load, it ensures efficient operation even when the input voltage is close to the output voltage.
• Low Noise: It features a low output noise of 30µVRMS (10Hz to 100kHz), making it ideal for noise-sensitive applications such as audio and RF.
• Stable with Low ESR Capacitors: The LP2985AIM5-4.5 is stable with ceramic capacitors on the output, which have lower ESR (Equivalent Series Resistance) and are smaller and more reliable than tantalum capacitors.
• Power Supply Rejection Ratio (PSRR): The device boasts a high PSRR of 76dB at 1kHz, which helps in suppressing fluctuations in the input voltage and providing a stable output.

Applications

The LP2985AIM5-4.5 is versatile and can be used in a variety of applications, including:

• Battery-powered devices
• Portable and handheld equipment
• Reference voltage sources
• RF and analog circuits
• Notebook computers
• Consumer electronics

Package and Availability

This voltage regulator is available in a compact SOT-23-5 package, which is suitable for space-constrained applications. For design flexibility and ease of integration, the LP2985AIM5-4.5 is also supported by Texas Instruments' extensive technical documentation and design resources.

For detailed specifications, technical documents, and sample requests, visit the Texas Instruments official website or contact your local TI distributor.